package com.atguigu.tingshu.album.service.impl;

import com.atguigu.tingshu.album.mapper.AlbumInfoMapper;
import com.atguigu.tingshu.album.mapper.TrackInfoMapper;
import com.atguigu.tingshu.album.mapper.TrackStatMapper;
import com.atguigu.tingshu.album.service.TrackInfoService;
import com.atguigu.tingshu.album.service.VodService;
import com.atguigu.tingshu.common.constant.SystemConstant;
import com.atguigu.tingshu.common.result.Result;
import com.atguigu.tingshu.model.album.AlbumInfo;
import com.atguigu.tingshu.model.album.TrackInfo;
import com.atguigu.tingshu.model.album.TrackStat;
import com.atguigu.tingshu.query.album.TrackInfoQuery;
import com.atguigu.tingshu.user.client.UserInfoFeignClient;
import com.atguigu.tingshu.vo.album.*;
import com.atguigu.tingshu.vo.user.UserInfoVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.Assert;
import org.springframework.util.CollectionUtils;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

@Slf4j
@Service
@SuppressWarnings({"all"})
public class TrackInfoServiceImpl extends ServiceImpl<TrackInfoMapper, TrackInfo> implements TrackInfoService {

    @Autowired
    private TrackInfoMapper trackInfoMapper;
    @Autowired
    private TrackStatMapper trackStatMapper;
    @Autowired
    private AlbumInfoMapper albumInfoMapper;
    @Autowired
    private VodService vodService;
    @Autowired
    private UserInfoFeignClient userInfoFeignClient;

    @Override
    public List<TrackInfo> findPaidTrackInfoList(Long trackId, Integer trackCount, Long userId) {
        //  声明一个集合；
        List<TrackInfo> trackInfoList = new ArrayList<>();
        //  1.  获取用户购买过的声音列表;
        //  通过声音Id获取到声音对象中的专辑Id
        TrackInfo trackInfo = this.getById(trackId);
        Result<List<Long>> userPaidTrackList = userInfoFeignClient.findUserPaidTrackList(trackInfo.getAlbumId());
        //  判断返回数据集
        Assert.notNull(userPaidTrackList, "查询用户购买声音列表失败");
        //  这个集合可以为空.
        List<Long> userPaidTrackIdList = userPaidTrackList.getData();

        //  判断当前购买的集数;
        if (0 == trackCount) {
            //  购买的是本集；
            trackInfoList.add(trackInfo);
        } else {
            //  设置查询条件;
            LambdaQueryWrapper<TrackInfo> wrapper = new LambdaQueryWrapper<>();
            wrapper.gt(TrackInfo::getOrderNum, trackInfo.getOrderNum())
                    .eq(TrackInfo::getAlbumId, trackInfo.getAlbumId());
            if (!CollectionUtils.isEmpty(userPaidTrackIdList)) {
                //  排除用户已购买的声音Id;
                wrapper.notIn(TrackInfo::getId, userPaidTrackIdList);
            }
            wrapper.last(" limit " + trackCount);
            //  查询数据;
            trackInfoList = trackInfoMapper.selectList(wrapper);
        }
        //  返回数据;
        return trackInfoList;
    }

    @Override
    public List<Map<String, Object>> findUserTrackPaidList(Long trackId, Long userId) {
        List<Map<String,Object>> list = new ArrayList<>();
        /*
        1.从当前点击声音开始，计算有多少需要付费的声音列表
        2.查询用户是否购买过当前专辑对应的声音，然后对第一步过滤
         */
        //获取声音对象
        TrackInfo trackInfo = this.getById(trackId);
        // 获取当前声音Id的排序值
        Integer orderNum = trackInfo.getOrderNum();
        // 获取到当前用户购买的声音列表
        Result<List<Long>> trackIdListResult = userInfoFeignClient.findUserPaidTrackList(trackInfo.getAlbumId());
        Assert.notNull(trackIdListResult, "查询用户购买声音失败");
        List<Long> trackIdList = trackIdListResult.getData();
        // 从当前声音id开始计算有多少声音是需要付费的集合
        //  select * from track_info where order_num > 8 and album_id = 341;
        //  7--54  trackIdListResult {17,18,19}
        List<TrackInfo> trackInfoList = trackInfoMapper.selectList(new LambdaQueryWrapper<TrackInfo>()
                .eq(TrackInfo::getAlbumId, trackInfo.getAlbumId())
                .gt(TrackInfo::getOrderNum, orderNum));
        // 两集合取差集 获取实际需要付费的声音id列表
        List<TrackInfo> paidTrackIdList = trackInfoList.stream()
                .filter(trackInfoItem -> !trackIdList.contains(trackInfoItem.getId())).collect(Collectors.toList());
        // 根据专辑id获取专辑对象
        AlbumInfo albumInfo = albumInfoMapper.selectById(trackInfo.getAlbumId());
        // 判断
        if(paidTrackIdList.size()>=0){
            // 显示本集
            HashMap<String, Object> map = new HashMap<>();
            map.put("name", "本集");
            // 当前每一集声音的钱数
            map.put("price", albumInfo.getPrice());
            map.put("trackCount",0);
            // 添加到本集合
            list.add(map);
        }
        // 后9集
        if(paidTrackIdList.size()>0 && paidTrackIdList.size()<=10){
            //显示后size集
            HashMap<String, Object> map = new HashMap<>();
            map.put("name", "后" + paidTrackIdList.size() + "集");
            // 当前每一集声音的钱数
            map.put("price", albumInfo.getPrice().multiply(new BigDecimal(String.valueOf(paidTrackIdList.size()))));
            map.put("trackCount",paidTrackIdList.size());
            // 添加到本集合
            list.add(map);
        }
        // 后10集
        if(paidTrackIdList.size()>10){
            //  后10集合;
            HashMap<String, Object> map = new HashMap<>();
            map.put("name", "后10集");
            //  当前每一集声音的钱数;
            map.put("price", albumInfo.getPrice().multiply(new BigDecimal("10")));
            map.put("trackCount", 10);
            //  添加本集到集合;
            list.add(map);
        }
        //  后19集
        if (paidTrackIdList.size() > 10 && paidTrackIdList.size() <= 20) {
            //  显示后size集;
            HashMap<String, Object> map = new HashMap<>();
            map.put("name", "后" + paidTrackIdList.size() + "集");
            //  当前每一集声音的钱数;
            map.put("price", albumInfo.getPrice().multiply(new BigDecimal(String.valueOf(paidTrackIdList.size()))));
            map.put("trackCount", paidTrackIdList.size());
            //  添加本集到集合;
            list.add(map);
        }
        //  后20集;
        if (paidTrackIdList.size() > 20) {
            //  后10集合;
            HashMap<String, Object> map = new HashMap<>();
            map.put("name", "后20集");
            //  当前每一集声音的钱数;
            map.put("price", albumInfo.getPrice().multiply(new BigDecimal("20")));
            map.put("trackCount", 20);
            //  添加本集到集合;
            list.add(map);
        }
        //返回数据
        return list;
    }


    @Override
    public void updateTrackStat(TrackStatMqVo trackStatMqVo) {
        //  1.  更新声音的播放量： update track_stat set stat_num = stat_num+1 where track_id = ? and stat_type = '0701' and is_deleted = 0;
        //  判断是否是属于播放量：
        if (SystemConstant.TRACK_STAT_PLAY.equals(trackStatMqVo.getStatType())) {
            //调用更新方法
            trackInfoMapper.updateTrackStat(trackStatMqVo.getCount(), trackStatMqVo.getTrackId(), trackStatMqVo.getStatType());
            //更新专辑的播放量
            albumInfoMapper.updateAlbumStat(trackStatMqVo.getCount(), trackStatMqVo.getAlbumId(), SystemConstant.ALBUM_STAT_PLAY);
        } else if (SystemConstant.TRACK_STAT_COLLECT.equals(trackStatMqVo.getStatType())) {
            //后续补
        }
    }

    @Override
    public IPage<AlbumTrackListVo> findAlbumTrackPage(Page<AlbumTrackListVo> albumTrackListVoPage, Long albumId, Long userId) {
        /*
        1.根据专辑id 获取声音列表
        2.判断用户是否登录
            null != userid

            null == userid
            2.1判断专辑类型
            2.2除自己购买的声音id
         */
        IPage<AlbumTrackListVo> albumTrackListVoIPage = trackInfoMapper.selectAlbumTrackList(albumTrackListVoPage, albumId);
        //查询专辑类型
        AlbumInfo albumInfo = albumInfoMapper.selectById(albumId);
        if (null == userId) {
            //未登录 专辑是付费时，除免费试听声音之外都要付费
            if (!SystemConstant.ALBUM_PAY_TYPE_FREE.equals(albumInfo.getPayType())) {
                //免费试听集数
                Integer tracksForFree = albumInfo.getTracksForFree();
                //除了免费的其他都需要付费
                albumTrackListVoIPage.getRecords().stream()
                        .filter(albumTrackListVo -> albumTrackListVo.getOrderNum() > tracksForFree)
                        .forEach(albumTrackListVo -> albumTrackListVo.setIsShowPaidMark(true));
            }
        } else {
            //用户登录了：获取用户信息
            Result<UserInfoVo> userInfoVoResult = userInfoFeignClient.getUserInfo(userId);
            Assert.notNull(userInfoVoResult, "查询用户信息失败");
            UserInfoVo userInfoVo = userInfoVoResult.getData();
            Assert.notNull(userInfoVo, "查询用户信息失败");
            //设置一个变量记录是否要付费 false 免费  true  付费
            boolean isPaid = false;
            //判断专辑的类型 vip 免费
            if (SystemConstant.ALBUM_PAY_TYPE_VIPFREE.equals(albumInfo.getPayType())) {
                //前提时用户时vip且过期
                if (userInfoVo.getIsVip() == 1 && userInfoVo.getVipExpireTime().before(new Date()) || userInfoVo.getIsVip() == 0) {
                    //需要花钱买声音
                    isPaid = true;
                }
            } else if (SystemConstant.ALBUM_PAY_TYPE_REQUIRE.equals(albumInfo.getPayType())) {
                //整张专辑都是付费的
                isPaid = true;
            }
            //综上所述
            if (isPaid) {
                //都需要付费
                //筛选出需要判断的声音列表
                List<AlbumTrackListVo> albumTrackListVoList = albumTrackListVoIPage.getRecords().stream()
                        .filter(albumTrackListVo -> albumTrackListVo.getOrderNum() > albumInfo.getTracksForFree())
                        .collect(Collectors.toList());
                // 找需要付费的声音id
                List<Long> trackIdList = albumTrackListVoList.stream().map(AlbumTrackListVo::getTrackId).collect(Collectors.toList());
                // 获取用户已经购买过的声音列表 如果已经购买id和状态存储到map集合中 map.put(trackId,1)-买过
                Result<Map<Long, Integer>> mapResult = userInfoFeignClient.userIsPaidTrack(albumId, trackIdList);
                Assert.notNull(mapResult, "查询用户是否购买声音失败");
                Map<Long, Integer> map = mapResult.getData();
                Assert.notNull(map, "查询用户是否购买声音失败");
                for (AlbumTrackListVo albumTrackListVo : albumTrackListVoList) {
                    albumTrackListVo.setIsShowPaidMark(map.get(albumTrackListVo.getTrackId()) == 0);
                }
            }
        }

        return albumTrackListVoIPage;
    }

    @Override
    public void updateTrackInfo(Long trackId, TrackInfoVo trackInfoVo) {
        //	trackId + trackInfoVo 知道用户具体的修改操作了！
        //	track_info;
        TrackInfo trackInfo = this.getById(trackId);
        //先获取原始的文件Id
        String mediaFileId = trackInfo.getMediaFileId();
        //属性赋值
        BeanUtils.copyProperties(trackInfoVo, trackInfo);
        //判断声音是否呗修改
        if (!mediaFileId.equals(trackInfo.getMediaFileId())) {
            //修改了声音
            TrackMediaInfoVo mediaInfo = vodService.getMediaInfo(trackInfoVo.getMediaFileId());
            //赋值最新的流媒体数据
            trackInfo.setMediaType(mediaInfo.getType());
            trackInfo.setMediaSize(mediaInfo.getSize());
            trackInfo.setMediaDuration(mediaInfo.getDuration());
            trackInfo.setMediaUrl(mediaInfo.getMediaUrl());
            //删除原有的音频文件
            vodService.deleteMediaFile(mediaFileId);
        }
        this.updateById(trackInfo);

    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void removeTrackInfo(Long trackId) {
        // 查询当前声音对象
        TrackInfo trackInfo = this.getById(trackId);
        // track_info  track_stat album_info;
        trackInfoMapper.deleteById(trackId);
        //track_stat
        trackStatMapper.delete(new LambdaQueryWrapper<TrackStat>().eq(TrackStat::getTrackId, trackId));
        //album_info 更新 include_track_count
        AlbumInfo albumInfo = albumInfoMapper.selectById(trackInfo.getAlbumId());
        //删除一条数据
        albumInfo.setIncludeTrackCount(albumInfo.getIncludeTrackCount() - 1);
        //需要更新记录
        albumInfoMapper.updateById(albumInfo);
        // 在重新管理 order_num
        trackInfoMapper.updateOrderNum(trackInfo.getAlbumId(), trackInfo.getOrderNum());
        //删除云点播中的声音记录
        vodService.deleteMediaFile(trackInfo.getMediaFileId());
    }

    @Override
    public IPage<TrackListVo> findUserAllAlbumList(Page<TrackListVo> trackListVoPage, TrackInfoQuery trackInfoQuery) {
        return trackInfoMapper.selectUserTrackPage(trackListVoPage, trackInfoQuery);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void saveTrackInfo(TrackInfoVo trackInfoVo, Long userId) {
        try {
            // track_info track_stat album_info;
            TrackInfo trackInfo = new TrackInfo();
            //对有相同的属性值，进行属性拷贝
            BeanUtils.copyProperties(trackInfoVo, trackInfo);
            //赋值用户id
            trackInfo.setUserId(userId);
            //	order_num; 第一种查询当前专辑对应的声音集数+1; 第二种：查询专辑包含声音总数+1;
            AlbumInfo albumInfo = albumInfoMapper.selectById(trackInfoVo.getAlbumId());
            // 排序值往前动一下
            trackInfo.setOrderNum(albumInfo.getIncludeTrackCount() + 1);
            //	处理流媒体的数据; 时长，类型这些数据页面没有传递；fileId 查询流媒体数据，然后赋值：调用云点播的api;
            TrackMediaInfoVo trackMediaInfoVo = vodService.getMediaInfo(trackInfoVo.getMediaFileId());
            //  赋值
            trackInfo.setMediaUrl(trackMediaInfoVo.getMediaUrl());
            trackInfo.setMediaDuration(trackMediaInfoVo.getDuration());
            trackInfo.setMediaType(trackMediaInfoVo.getType());
            trackInfo.setMediaSize(trackMediaInfoVo.getSize());
            //保存声音结束
            trackInfoMapper.insert(trackInfo);
            //track_stat
            saveTrackStat(trackInfo.getId(), SystemConstant.TRACK_STAT_PLAY);
            saveTrackStat(trackInfo.getId(), SystemConstant.TRACK_STAT_COLLECT);
            saveTrackStat(trackInfo.getId(), SystemConstant.TRACK_STAT_PRAISE);
            saveTrackStat(trackInfo.getId(), SystemConstant.TRACK_STAT_COMMENT);
            //album_info  更新数据  专辑内含声音总数
            albumInfo.setIncludeTrackCount(albumInfo.getIncludeTrackCount() + 1);
            //更新操作
            albumInfoMapper.updateById(albumInfo);
        } catch (BeansException e) {
            log.error("保存信息失败:{}" + e);
            throw new RuntimeException(e);
        }

    }

    public void saveTrackStat(Long trackId, String statPlay) {
        TrackStat trackStat = new TrackStat();
        if (statPlay == SystemConstant.TRACK_STAT_PLAY) {
            trackStat.setTrackId(trackId);
            trackStat.setStatType(statPlay);
            trackStat.setStatNum(0);
            trackStatMapper.insert(trackStat);
        } else {
            //赋值
            trackStat.setTrackId(trackId);
            trackStat.setStatType(statPlay);
            trackStat.setStatNum(new Random().nextInt(1000));
            //数据保存
            trackStatMapper.insert(trackStat);
        }
    }
}
